<?php
namespace ueditor;

/**
 * @desc 百度UEditor上传
 * @package ueditor
 */
class index{

    /**
     * @var array
     */
    protected $config = [
        /* 上传图片配置项 */
        "imageActionName"     => "uploadimage", /* 执行上传图片的action名称 */
        "imageFieldName"      => "upfile", /* 提交的图片表单名称 */
        "imageMaxSize"        => 2048000, /* 上传大小限制，单位B */
        "imageAllowFiles"     => [".png", ".jpg", ".jpeg", ".gif", ".bmp"], /* 上传图片格式显示 */
        "imageCompressEnable" => true, /* 是否压缩图片,默认是true */
        "imageCompressBorder" => 1600, /* 图片压缩最长边限制 */
        "imageInsertAlign"    => "none", /* 插入的图片浮动方式 */
        "imageUrlPrefix"      => "", /* 图片访问路径前缀 */
        "imagePathFormat"     => "/tipster/uploads/image/{yyyy}{mm}/{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
                            /* {filename} 会替换成原文件名,配置这项需要注意中文乱码问题 */
                            /* {rand:6} 会替换成随机数,后面的数字是随机数的位数 */
                            /* {time} 会替换成时间戳 */
                            /* {yyyy} 会替换成四位年份 */
                            /* {yy} 会替换成两位年份 */
                            /* {mm} 会替换成两位月份 */
                            /* {dd} 会替换成两位日期 */
                            /* {hh} 会替换成两位小时 */
                            /* {ii} 会替换成两位分钟 */
                            /* {ss} 会替换成两位秒 */
                            /* 非法字符 \ =>* ? " < > | */
                            /* 涂鸦图片上传配置项 */
        "scrawlActionName"  => "uploadscrawl", /* 执行上传涂鸦的action名称 */
        "scrawlFieldName"   => "upfile", /* 提交的图片表单名称 */
        "scrawlPathFormat"  => "/tipster/uploads/image/{yyyy}{mm}/{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
        "scrawlMaxSize"     => 2048000, /* 上传大小限制，单位B */
        "scrawlUrlPrefix"   => "", /* 图片访问路径前缀 */
        "scrawlInsertAlign" => "none",

        /* 截图工具上传 */
        "snapscreenActionName"  => "uploadimage", /* 执行上传截图的action名称 */
        "snapscreenPathFormat"  => "/tipster/uploads/image/{yyyy}{mm}/{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
        "snapscreenUrlPrefix"   => "", /* 图片访问路径前缀 */
        "snapscreenInsertAlign" => "none", /* 插入的图片浮动方式 */

        /* 抓取远程图片配置 */
        "catcherLocalDomain" => ["127.0.0.1", "localhost", "img.baidu.com"],
        "catcherActionName"  => "catchimage", /* 执行抓取远程图片的action名称 */
        "catcherFieldName"   => "source", /* 提交的图片列表表单名称 */
        "catcherPathFormat"  => "/tipster/uploads/image/{yyyy}{mm}/{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
        "catcherUrlPrefix"   => "", /* 图片访问路径前缀 */
        "catcherMaxSize"     => 2048000, /* 上传大小限制，单位B */
        "catcherAllowFiles"  => [".png", ".jpg", ".jpeg", ".gif", ".bmp"], /* 抓取图片格式显示 */

        /* 上传视频配置 */
        "videoActionName" => "uploadvideo", /* 执行上传视频的action名称 */
        "videoFieldName"  => "upfile", /* 提交的视频表单名称 */
        "videoPathFormat" => "/tipster/uploads/video/{yyyy}{mm}/{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
        "videoUrlPrefix"  => "", /* 视频访问路径前缀 */
        "videoMaxSize"    => 102400000, /* 上传大小限制，单位B，默认100MB */
        "videoAllowFiles" => [
            ".flv", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg",
            ".ogg", ".ogv", ".mov", ".wmv", ".mp4", ".webm", ".mp3", ".wav", ".mid"], /* 上传视频格式显示 */

        /* 上传文件配置 */
        "fileActionName" => "uploadfile", /* controller里,执行上传视频的action名称 */
        "fileFieldName"  => "upfile", /* 提交的文件表单名称 */
        "filePathFormat" => "/tipster/uploads/file/{yyyy}{mm}/{dd}/{time}{rand:6}", /* 上传保存路径,可以自定义保存路径和文件名格式 */
        "fileUrlPrefix"  => "", /* 文件访问路径前缀 */
        "fileMaxSize"    => 51200000, /* 上传大小限制，单位B，默认50MB */
        "fileAllowFiles" => [
            ".png", ".jpg", ".jpeg", ".gif", ".bmp",
            ".flv", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg",
            ".ogg", ".ogv", ".mov", ".wmv", ".mp4", ".webm", ".mp3", ".wav", ".mid",
            ".rar", ".zip", ".tar", ".gz", ".7z", ".bz2", ".cab", ".iso",
            ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".pdf", ".txt", ".md", ".xml"
        ], /* 上传文件格式显示 */

        /* 列出指定目录下的图片 */
        "imageManagerActionName"  => "listimage", /* 执行图片管理的action名称 */
        "imageManagerListPath"    => "/tipster/uploads/image/", /* 指定要列出图片的目录 */
        "imageManagerListSize"    => 20, /* 每次列出文件数量 */
        "imageManagerUrlPrefix"   => "", /* 图片访问路径前缀 */
        "imageManagerInsertAlign" => "none", /* 插入的图片浮动方式 */
        "imageManagerAllowFiles"  => [".png", ".jpg", ".jpeg", ".gif", ".bmp"], /* 列出的文件类型 */

        /* 列出指定目录下的文件 */
        "fileManagerActionName" => "listfile", /* 执行文件管理的action名称 */
        "fileManagerListPath"   => "/tipster/uploads/file/", /* 指定要列出文件的目录 */
        "fileManagerUrlPrefix"  => "", /* 文件访问路径前缀 */
        "fileManagerListSize"   => 20, /* 每次列出文件数量 */
        "fileManagerAllowFiles" => [
            ".png", ".jpg", ".jpeg", ".gif", ".bmp",
            ".flv", ".swf", ".mkv", ".avi", ".rm", ".rmvb", ".mpeg", ".mpg",
            ".ogg", ".ogv", ".mov", ".wmv", ".mp4", ".webm", ".mp3", ".wav", ".mid",
            ".rar", ".zip", ".tar", ".gz", ".7z", ".bz2", ".cab", ".iso",
            ".doc", ".docx", ".xls", ".xlsx", ".ppt", ".pptx", ".pdf", ".txt", ".md", ".xml"
        ]
    ];

    /**
     * @desc UEditor上传入口
     * @return string
     */
    public function init() {
        $action = input('action');
        $callback = input('callback');
        $CONFIG   = $this->config;
        switch ($action) {
            case 'config':
                $result =  json_encode($CONFIG);
                break;

            /* 上传图片 */
            case 'uploadimage':
                /* 上传涂鸦 */
            case 'uploadscrawl':
                /* 上传视频 */
            case 'uploadvideo':
                /* 上传文件 */
            case 'uploadfile':
                $result = $this->actionUpload($CONFIG);
                break;

            /* 列出图片 */
            case 'listimage':
                $result = $this->actionList($CONFIG);
                break;
            /* 列出文件 */
            case 'listfile':
                $result = $this->actionList($CONFIG);
                break;

            /* 抓取远程文件 */
            case 'catchimage':
                $result = $this->actionCrawler($CONFIG);
                break;

            default:
                $result = json_encode([
                    'state'=> '请求地址出错'
                ]);
                break;
        }

        /* 输出结果 */
        if (isset($callback)) {
            if (preg_match("/^[\w_]+$/", $callback)) {
                echo htmlspecialchars($callback) . '(' . $result . ')';
            } else {
                echo json_encode([
                    'state'=> 'callback参数不合法'
                ]);
            }
        } else {
            echo $result;
        }
    }

    /**
     * @desc 上传文件
     * @param $CONFIG
     * @return string
     */
    public function actionUpload($CONFIG) {
        include "upload.php";
        $base64 = "upload";
        $action = input('action');

        switch ($action) {
            case 'uploadimage':
                $config = array(
                    "pathFormat" => $CONFIG['imagePathFormat'],
                    "maxSize"    => $CONFIG['imageMaxSize'],
                    "allowFiles" => $CONFIG['imageAllowFiles']
                );
                $fieldName = $CONFIG['imageFieldName'];
                break;
            case 'uploadscrawl':
                $config = array(
                    "pathFormat" => $CONFIG['scrawlPathFormat'],
                    "maxSize"    => $CONFIG['scrawlMaxSize'],
                    "allowFiles" => $CONFIG['scrawlAllowFiles'],
                    "oriName"    => "scrawl.png"
                );
                $fieldName = $CONFIG['scrawlFieldName'];
                $base64 = "base64";
                break;
            case 'uploadvideo':
                $config = array(
                    "pathFormat" => $CONFIG['videoPathFormat'],
                    "maxSize"    => $CONFIG['videoMaxSize'],
                    "allowFiles" => $CONFIG['videoAllowFiles']
                );
                $fieldName = $CONFIG['videoFieldName'];
                break;
            case 'uploadfile':
            default:
                $config = array(
                    "pathFormat" => $CONFIG['filePathFormat'],
                    "maxSize"    => $CONFIG['fileMaxSize'],
                    "allowFiles" => $CONFIG['fileAllowFiles']
                );
                $fieldName = $CONFIG['fileFieldName'];
                break;
        }

        /* 生成上传实例对象并完成上传 */
        $up = new upload($fieldName, $config, $base64);
        /**
         * 得到上传文件所对应的各个参数,数组结构
         * array(
         *     "state" => "",          //上传状态，上传成功时必须返回"SUCCESS"
         *     "url" => "",            //返回的地址
         *     "title" => "",          //新文件名
         *     "original" => "",       //原始文件名
         *     "type" => ""            //文件类型
         *     "size" => "",           //文件大小
         * )
         */

        /* 返回数据 */
        return json_encode($up->getFileInfo());
    }


    /**
     * @desc 列出图片和文件
     * @param $CONFIG
     * @return string
     */
    public function actionList($CONFIG) {
        include "upload.php";
        $action = input('action');

        /* 判断类型 */
        switch ($action) {
            /* 列出文件 */
            case 'listfile':
                $allowFiles = $CONFIG['fileManagerAllowFiles'];
                $listSize = $CONFIG['fileManagerListSize'];
                $path = $CONFIG['fileManagerListPath'];
                break;
            /* 列出图片 */
            case 'listimage':
            default:
                $allowFiles = $CONFIG['imageManagerAllowFiles'];
                $listSize = $CONFIG['imageManagerListSize'];
                $path = $CONFIG['imageManagerListPath'];
        }
        $allowFiles = substr(str_replace(".", "|", join("", $allowFiles)), 1);

        /* 获取参数 */
        $size = isset($_GET['size']) ? htmlspecialchars($_GET['size']) : $listSize;
        $start = isset($_GET['start']) ? htmlspecialchars($_GET['start']) : 0;
        $end = $start + $size;

        /* 获取文件列表 */
        $path = $_SERVER['DOCUMENT_ROOT'] . (substr($path, 0, 1) == "/" ? "":"/") . $path;
        $files = getfiles($path, $allowFiles);
        if (!count($files)) {
            return json_encode(array(
                "state" => "no match file",
                "list" => array(),
                "start" => $start,
                "total" => count($files)
            ));
        }

        /* 获取指定范围的列表 */
        $len = count($files);
        for ($i = min($end, $len) - 1, $list = array(); $i < $len && $i >= 0 && $i >= $start; $i--){
            $list[] = $files[$i];
        }

        /* 返回数据 */
        $result = json_encode(array(
            "state" => "SUCCESS",
            "list" => $list,
            "start" => $start,
            "total" => count($files)
        ));

        return $result;
    }

    /**
     * @desc 上传文件
     * @param $CONFIG
     * @return string
     */
    public function actionCrawler($CONFIG) {
        set_time_limit(0);
        include("upload.php");

        /* 上传配置 */
        $config = array(
            "pathFormat" => $CONFIG['catcherPathFormat'],
            "maxSize" => $CONFIG['catcherMaxSize'],
            "allowFiles" => $CONFIG['catcherAllowFiles'],
            "oriName" => "remote.png"
        );
        $fieldName = $CONFIG['catcherFieldName'];

        /* 抓取远程图片 */
        $list = array();
        if (isset($_POST[$fieldName])) {
            $source = $_POST[$fieldName];
        } else {
            $source = $_GET[$fieldName];
        }
        foreach ($source as $imgUrl) {
            $item = new upload($imgUrl, $config, "remote");
            $info = $item->getFileInfo();
            array_push($list, array(
                "state" => $info["state"],
                "url" => $info["url"],
                "size" => $info["size"],
                "title" => htmlspecialchars($info["title"]),
                "original" => htmlspecialchars($info["original"]),
                "source" => htmlspecialchars($imgUrl)
            ));
        }

        /* 返回抓取数据 */
        return json_encode(array(
            'state'=> count($list) ? 'SUCCESS':'ERROR',
            'list'=> $list
        ));
    }

}

/**
 * 遍历获取目录下的指定类型的文件
 * @param $path
 * @param $allowFiles
 * @param array $files
 * @return array|null
 */
function getfiles($path, $allowFiles, &$files = array())
{
    if (!is_dir($path)) return null;
    if(substr($path, strlen($path) - 1) != '/') $path .= '/';
    $handle = opendir($path);
    while (false !== ($file = readdir($handle))) {
        if ($file != '.' && $file != '..') {
            $path2 = $path . $file;
            if (is_dir($path2)) {
                getfiles($path2, $allowFiles, $files);
            } else {
                if (preg_match("/\.(".$allowFiles.")$/i", $file)) {
                    $files[] = array(
                        'url'=> substr($path2, strlen($_SERVER['DOCUMENT_ROOT'])),
                        'mtime'=> filemtime($path2)
                    );
                }
            }
        }
    }
    return $files;
}
